Improved patient-reported health impact of multiple sclerosis: the ENABLE study of PR-fampridine

- MacDonell, Richard; Nagels, Guy; Wang, Ping; Yeh, Michael; Hovenden, Maria; Soelberg Sørensen, Per; Laplaud, David-Axel; Pozzilli, Carlo; de Jong, Brigit; Martins da Silva, Ana; Nicholas, Richard; Lechner-Scott, Jeannette; Gaebler, Julia A.; Agarwal, Sonalee